These are intra-operative photographs showing an arthroscopic (keyhole)
Bony Spur Before
This shows the under-surface of the acromion. As you can appreciate there is a spur present which may be contributing to shoulder impingement.
Bony Spur during
This photo shows the spur being removed. As you can see it is common to remove approximately 5mm of bone from the undersurface using a mechanised shaver
Bony Spur Post
This shows the spur following removal